Lots of things, but almost always the same concept: Divisions of space. Not just "I'll remember to put that there," but making a place to put it. No "piles" allowed - a tray, binder, folder, bag or bin for everything, labels optional. Making spaces for different kinds of work, duplicating your workstation if necessary. "This is the type of place where I do X" is a powerful behavior shaping tool. This can also take the form of reconfiguring the same space in slightly different ways.

The computer can make a mess of organization simply because it's too easy to hide away everything and the system will oftentimes impose the method on you. Notes and documentation can help. Make a habit of daily self-talk, a "standup meeting for one" when you have a break. The exercise of speaking it aloud jogs the memory and creates a form of engagement that isn't had by thinking it or writing it. If done habitually you won't have to physically record much, because your priorities will remain stable day by day.